Embodiments of the present invention include radio frequency identification location systems and methods. In one embodiment, RF signals are transmitted from one or more RFID readers, and in accordance therewith, backscattered signals are received from a tag to be located. A plurality of measured position parameters are used to determine a location of the tag. In one embodiment, one reader may transmit and three readers may receive signals to determine the position of a tag. In other embodiments, multiple readers may transmit and receive. In another embodiment, one reader may transmit from different positions to locate a tag. Embodiments of the invention may be used to track a moving tag. A reader's position may be determined using GPS, reference tags, or the reader may be positioned in a known location. A map may be provided to a user to display the location or movement of a tag or a corresponding item.

RFID location systems and methods

According to some example embodiments, systems, apparatus, methods and computer program products are provided for monitoring articles, such as in a commercial environment.

Retail product tracking system, method, and apparatus

Embodiments of the present invention include a wireless access point that acquires and processes radio frequency identification (RFID) information. The wireless access point may be coupled to a network of RFID readers over a wireless network. The RFID readers may read a plurality of RFID tags and transmit information to one or more readers. The readers may, in turn, transmit the RFID information to a wireless access point. The wireless access point may include a middleware layer for performing a variety of RFID data processing functions. In one embodiment, the wireless RFID reader network may be used to improve positioning of readers and tags, and may include a GPS system or position assisted GPS system at the reader and/or tag level.

Wireless rfid networking systems and methods

A system for tracking entities at a site comprises a mesh of radio frequency identification (RFID) tags. Each of the tracked entities, which may move about the site, is associated with and attached to a portable RFID tag. Each RFID tag is at least periodically caused to transmit a signal that includes an identification of the RFID tag. The signal is received by other RFID tags that are within range, which determine a location indicative parameter. Some of the RFID tags receiving the signal are fixed at predefined locations. Specific fixed RFID tags are designated as controller nodes. Data comprising an identification of the RFID tag receiving a signal, the location indicative parameter, and the identification of the portable RFID tag transmitting the signal are communicated to a location engine server, which processes the data to determine at least a relative position of the portable RFID tags on the site.

Using a mesh of radio frequency identification tags for tracking entities at a site

Provided are embodiments of configurable monitoring devices, methods, systems, computer readable storage media and other means for dynamically transitioning the functionality, roles and/or modes of operation of networked devices. In some examples, the dynamic configuration of the configurable monitoring device may be accomplished wirelessly and used to monitor and track the location of retail products as well as thwart theft of the retail products.

configurable monitoring device

Techniques for RFID communication adaptive to an environment are provided. An RFID reader includes a processor and a reconfigurable hardware element. The reconfigurable hardware element is reconfigurable by the processor in response to a predetermined condition. Non-volatile memory stores configuration code for the reconfigurable hardware element. In specific embodiments, the predetermined condition can be the presence of a mixed tag population, proximity to an interferer, historical read rates, RF noise level, and reader location, as well as other factors.

Adaptive RFID devices

Methods and apparatuses for extracting information from a database based on tag data are provided. One method includes interrogating a plurality of RFID tags coupled with objects within in an area to obtain tag data. The contextual environment of the area is determined based on the tag data. A search of a database relating to an item in the area is conducted. Relevance rankings of search results are adjusted based upon the determined contextual environment. Search results can be displayed in order of relevance rankings.

Database search with RFID

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Adaptive RFID devices

Database search with RFID